Coincidentally, I'm having an issue with my RM as well. It will not turn on a zone, when the receiver has the antenna hooked in. When I remove it, it will receive the signal and turn a zone on and off as instructed by be pressing the button on the transmitter. When I hook the antenna back in, it will not turn any zones on or off.

Ideas? I haven't cleaned it off yet to see if it's some weird dirty contact issue.

Last I heard, it's $300.00 bucks to send the remote to RM. Despite what any one says, they are pretty bullet-proof, short of a concrete drop or a full imersion in a valve box. The battery is available from Radio Shack, etc.

Update. Started out the day working good with the new semi-waterproof case. Went to lunch and left it sitting in the front seat. Back to work and it wouldn't work so I figured it was a moisture thing. Took the bottom plate off and can tell there is moisture inside so I let it air out while changing a head or something. Put back together and back to working and good for rest of day. When I got home at 8:30 I took off the bottom and set it in front of the air cleaner that blows a gentle breeze. Figure that will dry it out good.

As for the new semi-waterproof case I will not tell where I purchased it. Can't give away all my secrets.

Update. Started out the day working good with the new semi-waterproof case. Went to lunch and left it sitting in the front seat. Back to work and it wouldn't work so I figured it was a moisture thing. Took the bottom plate off and can tell there is moisture inside so I let it air out while changing a head or something. Put back together and back to working and good for rest of day. When I got home at 8:30 I took off the bottom and set it in front of the air cleaner that blows a gentle breeze. Figure that will dry it out good.

As for the new semi-waterproof case I will not tell where I purchased it. Can't give away all my secrets.

This weekend you might put the remote in a bag of rice to wick all the moisture out.

I put a few silica bags in my transmitter cases to help keep the electronic components dry.Posted via Mobile Device